// lodopUtils.js
var CreatedOKLodopObject, CLodopIsLocal, CLodopJsState;

//判断是否需要CLodop(那些不支持插件的浏览器)
function needCLodop() {
  try {
    var ua = navigator.userAgent;
    if (ua.match(/Windows\sPhone/i)) return true;
    if (ua.match(/iPhone|iPod|iPad/i)) return true;
    if (ua.match(/Android/i)) return true;
    if (ua.match(/Edge\D?\d+/i)) return true;

    var verTrident = ua.match(/Trident\D?\d+/i);
    var verIE = ua.match(/MSIE\D?\d+/i);
    var verOPR = ua.match(/OPR\D?\d+/i);
    var verFF = ua.match(/Firefox\D?\d+/i);
    var x64 = ua.match(/x64/i);
    if (!verTrident && !verIE && x64) return true;
    else if (verFF) {
      verFF = verFF[0].match(/\d+/);
      if (verFF[0] >= 41 || x64) return true;
    } else if (verOPR) {
      verOPR = verOPR[0].match(/\d+/);
      if (verOPR[0] >= 32) return true;
    } else if (!verTrident && !verIE) {
      var verChrome = ua.match(/Chrome\D?\d+/i);
      if (verChrome) {
        verChrome = verChrome[0].match(/\d+/);
        if (verChrome[0] >= 41) return true;
      }
    }
    return false;
  } catch (err) {
    return true;
  }
}

//加载引用CLodop的主JS,用双端口8000和18000(以防其中一个被占)
function loadCLodop() {
  if (CLodopJsState == 'loading' || CLodopJsState == 'complete') return;
  CLodopJsState = 'loading';
  var head = document.head || document.getElementsByTagName('head')[0] || document.documentElement;
  var JS1 = document.createElement('script');
  var JS2 = document.createElement('script');
  JS1.src = 'http://localhost:8000/CLodopfuncs.js?priority=1';
  JS2.src = 'http://localhost:18000/CLodopfuncs.js';
  JS1.onload = JS2.onload = function () {
    CLodopJsState = 'complete';
  };
  // eslint-disable-next-line no-unused-vars
  JS1.onerror = JS2.onerror = function (evt) {
    CLodopJsState = 'complete';
  };
  head.insertBefore(JS1, head.firstChild);
  head.insertBefore(JS2, head.firstChild);
  CLodopIsLocal = !!(JS1.src + JS2.src).match(/\/\/localho|\/\/127.0.0./i);
}
//加载
if (needCLodop()) {
  loadCLodop();
}

//获取LODOP对象主过程,判断是否安装、需否升级
function getLodop(oOBJECT, oEMBED) {
  var LODOP;
  try {
    var ua = navigator.userAgent;
    var isIE = !!ua.match(/MSIE/i) || !!ua.match(/Trident/i);
    if (needCLodop()) {
      try {
        // eslint-disable-next-line no-undef
        LODOP = getCLodop();
        // eslint-disable-next-line no-empty
      } catch (err) {}
      if (!LODOP && CLodopJsState !== 'complete') {
        if (CLodopJsState == 'loading') alert('网页还没下载完毕，请稍等一下再操作.');
        else alert('没有加载CLodop的主js，请先调用loadCLodop过程.');
        return;
      }
      if (!LODOP) {
        // eslint-disable-next-line no-undef
        document.body.innerHTML = strCLodopInstall_1 + (CLodopIsLocal ? strCLodopInstall_2 : '') + strCLodopInstall_3 + document.body.innerHTML;
        return;
      } else {
        // eslint-disable-next-line no-undef
        if (CLODOP.CVERSION < '4.1.2.3') {
          // eslint-disable-next-line no-undef
          document.body.innerHTML = strCLodopUpdate + document.body.innerHTML;
        }
        if (oEMBED && oEMBED.parentNode) oEMBED.parentNode.removeChild(oEMBED); //清理旧版无效元素
        if (oOBJECT && oOBJECT.parentNode) oOBJECT.parentNode.removeChild(oOBJECT);
      }
    } else {
      var is64IE = isIE && !!ua.match(/x64/i);
      //如果页面有Lodop就直接使用,否则新建
      if (oOBJECT || oEMBED) {
        if (isIE) LODOP = oOBJECT;
        else LODOP = oEMBED;
      } else if (!CreatedOKLodopObject) {
        LODOP = document.createElement('object');
        LODOP.setAttribute('width', 0);
        LODOP.setAttribute('height', 0);
        LODOP.setAttribute('style', 'position:absolute;left:0px;top:-100px;width:0px;height:0px;');
        if (isIE) LODOP.setAttribute('classid', 'clsid:2123C269-1E0C-4534-8141-A75355220B4CL');
        else LODOP.setAttribute('type', 'application/x-print-lodop');
        document.documentElement.appendChild(LODOP);
        CreatedOKLodopObject = LODOP;
      } else LODOP = CreatedOKLodopObject;
      //Lodop插件未安装时提示下载地址
      if (!LODOP || !LODOP.VERSION) {
        if (ua.indexOf('Chrome') >= 0)
          // eslint-disable-next-line no-undef
          document.body.innerHTML = strHtmChrome + document.body.innerHTML;
        if (ua.indexOf('Firefox') >= 0)
          // eslint-disable-next-line no-undef
          document.body.innerHTML = strHtmFireFox + document.body.innerHTML;
        // eslint-disable-next-line no-undef
        document.body.innerHTML = (is64IE ? strHtm64_Install : strHtmInstall) + document.body.innerHTML;
        return LODOP;
      }
    }
    if (LODOP.VERSION < '6.2.2.6') {
      if (!needCLodop())
        // eslint-disable-next-line no-undef
        document.body.innerHTML = (is64IE ? strHtm64_Update : strHtmUpdate) + document.body.innerHTML;
    }

    return LODOP;
  } catch (err) {
    alert('getLodop出错:' + err);
  }
}
